Police and firefighters seen rushing to help 17-year-old cyclist sprayed with unknown noxious liquid.

Incident later ruled out as an acid attack took place near Kensington PalaceGetty

A teenage boy was sprayed with an unknown substance in west London sparking fears of yet another acid attack in the capital. The 17-year-old was sprayed with the liquid – which later turned out not to be acid – just after 10am on Tuesday (8 August) in Kensington Gardens.

The boy was seen being doused in water by members of the emergency services close to Kensington Palace, the official residence of the Duke and Duchess of Cambridge, over fears the substance was acid.